Universal dynamical decoupling of a single solid-state spin from a spin bath
arXiv:1008.2119 · doi:10.1126/science.1192739
Abstract
Controlling the interaction of a single quantum system with its environment is a fundamental challenge in quantum science and technology. We dramatically suppress the coupling of a single spin in diamond with the surrounding spin bath by using double-axis dynamical decoupling. The coherence is preserved for arbitrary quantum states, as verified by quantum process tomography. The resulting coherence time enhancement is found to follow a general scaling with the number of decoupling pulses. No limit is observed for the decoupling action up to 136 pulses, for which the coherence time is enhanced more than 25 times compared to spin echo. These results uncover a new regime for experimental quantum science and allow to overcome a major hurdle for implementing quantum information protocols.
submitted 24 May 2010; published online 9 September 2010
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Cited by in corpus (13)
- Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
- Extending Quantum Coherence in Diamond
- Robust dynamical decoupling for quantum computing and quantum memory
- Spin dynamics in the optical cycle of single nitrogen-vacancy centres in diamond
- Dynamical Decoupling of a single electron spin at room temperature
- Single-spin magnetometry with multi-pulse sensing sequences
- Nuclear spin pair coherence in diamond for atomic scale magnetometry
- Optimal pulse spacing for dynamical decoupling in the presence of a purely-dephasing spin-bath
- Performance comparison of dynamical decoupling sequences for a qubit in a rapidly fluctuating spin-bath
- Anomalous decoherence effect in a quantum bath
- Protecting unknown two-qubit entangled states by nesting Uhrig's dynamical decoupling sequences
- Dynamical Decoupling in the Presence of Realistic Pulse Errors
- Extending quantum control of time-independent systems to time-dependent systems